MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a750d67fcf8282a6ac9bed9aaa4ad1f002859ce6de73ee72697b840a33e3cf0. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



Formbook


Vendor detections: 13


Intelligence 13 IOCs YARA 16 File information Comments

SHA256 hash: 4a750d67fcf8282a6ac9bed9aaa4ad1f002859ce6de73ee72697b840a33e3cf0
SHA3-384 hash: bff3f3e1c80039ca35efb030b1d1a7c18a1cbef411e82b418189f11ba7b09758cac280de191c86b906473dd7e1805ef6
SHA1 hash: b4c45c0ed929f6e9c9db2f05a7bfa396395137ed
MD5 hash: edc316b8803b0f0266cfae097c3750dd
humanhash: georgia-leopard-vermont-blue
File name:STG CFS Arrival Notice - pickup - RN 20248008-03.exe
Download: download sample
Signature Formbook
File size:702'464 bytes
First seen:2024-02-14 13:02:14 UTC
Last seen:2024-02-14 14:31:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:biD2s8lu1etjBvkAr610m71/4qeElK7nzh6xVWporlBQcgiW78Dwahjny0:MIwet9kNe2lEDzh6xVA0BRhW78DwaF
Threatray 56 similar samples on MalwareBazaar
TLSH T185E42354BCA857A3EC9D4BFCA465C9D303F229652AA6EFC9EDC070C71CB9F505612283
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 3492d06974b47c0c (7 x Formbook, 4 x AgentTesla, 1 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
290
Origin country :
NL NL
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
MSIL Injector
Verdict:
Malicious
Result
Threat name:
FormBook, PureLog Stealer
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Taskun
Status:
Malicious
First seen:
2024-02-14 05:32:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
20f2f841c46f6e33b86869b57b346d854027a761f27cf3e9588fc6b914c47226
MD5 hash:
11ff99a10482e4e16744edc1f95d7696
SHA1 hash:
fe01595d44561b7b0f3092aa1123fb9927923895
SH256 hash:
381144da05e03d47374dcf876b961aa8f8f9e10d7d901a894b2dcd78a74f1afe
MD5 hash:
75830b01c1bd70d147bf33df867c4b1c
SHA1 hash:
579289808ecc8b370a64ce7c98364ac75faac069
SH256 hash:
1af8313104bfad6894c122f2b8e53fc316a200a2be2bb2a84b30b68af8b7fbea
MD5 hash:
c4623af80f0d2b62aa6bf15a7e8e0d89
SHA1 hash:
99900dc6dc2a526d8e40a6cd07c35b967eff048a
SH256 hash:
d5c275c83f4748febe84aec49a5d90198ad6b22bb289fe57206da9df2e801663
MD5 hash:
d4af455f36cdeaa27c619a17e235cc5c
SHA1 hash:
914f50e789e5a1085cc3e48a346c8a968319b70e
SH256 hash:
49817d0de07d9ae5bf40b49382786f4dac91ca008d733536589f277fe04fe43b
MD5 hash:
2315f49230849a98eca577b156cceed7
SHA1 hash:
30f7e0a3ae7ab9dc69490050c6790a57c81aef96
SH256 hash:
4a750d67fcf8282a6ac9bed9aaa4ad1f002859ce6de73ee72697b840a33e3cf0
MD5 hash:
edc316b8803b0f0266cfae097c3750dd
SHA1 hash:
b4c45c0ed929f6e9c9db2f05a7bfa396395137ed
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:DebuggerCheck__GlobalFlags
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Author:Willi Ballenthin
Rule name:NET
Author:malware-lu
Rule name:pe_imphash
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 4a750d67fcf8282a6ac9bed9aaa4ad1f002859ce6de73ee72697b840a33e3cf0

(this sample)

  
Delivery method
Distributed via e-mail attachment

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